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' Patented July 12, 1881.

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F. A. HARLOW.

PRINTING PRESS.

No. 244,053. Patented July 12,1881.

v YNITED STATES 'O'PATENT PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 244,053, dated July 12, 1881.

Application filed March 9, 1881. (No model.)

1" all whom it may concern Be it known that I, FRANK A. HARLOW, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented a certain new and useful Improvement in Printing-Presses and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a perspective view of a printing-press constructed in accordance with my invention. Fig. 2 is a side elevation of the same with the platen against the face of the type 5 and Fig. 3 is a sectional elegation, showing the platen away from the be The present invention has relation to that class of printing-presses known as jobpresses, and more particularly to those operating the platen by means of the well-known toggle-joint principle.

The invention consists in the particular construction of the mechanism for operating the platen and roller-frame, as illustrated in the drawings and hereinafter described.

In the accompanying drawings, Arepresents the frame, of any suitable form and construction, to which the several operating parts of the pressare connected.

The platen B is connected by screws to or other suitable means to a frame, 0, said frame being pivoted to the upper ends of perpendicular arms I), said arms at their lower ends being pivoted to the inner sides of the frame A. The frame G, which carries the platen B, is pivoted to a toggle-arm, c, which, in turn, is pivoted to a yoke, d, said arm and yoke forming together a toggle-joint connection between the frames A and 0.

To the sides andlower extremity of the frame 0 are pivoted the ends of arms D, the opposite ends thereof being slotted to receive pins 0, projecting from the sides of the frame A, to guide and steady the arms in their movement.

To the yoke cl is pivoted or otherwise suitably connected a link, f, which is pivoted to the end of the rocking arm 9, formed with or rigidly connected to a horizontal shaft, h, which has its bearings in the sides of the frame A. These rocking arms are three in number, all radiating from the shaft-h, the arm 13 having connected to it a link, k, which is pivoted to an operating hand-lever, E, the forward end of said lever being loosely connected to one of the cross braces or rounds I, which holds the sides of the frame A together.

To the third one of the rocking arms (represented at m) is pivoted one end of a rod, F, the other end thereof being pivoted to the rollerframe G, said frame, in turn, being pivoted to the press-frame A.

It will now be seen that by raising the hand lever E to the position as shown in Fig. 3 of the drawings the platen B is retired from the face of the type, which are held within the frame H in the ordinary manner, and at the same time the platen is elevated to a convenient feedin g angle. During this operation the rollers I are brought down to their inking position, and the reverse motion of the hand-la ver E forces the platen against the type and gives the impression required, at the same time bringing the rollers I over and upon the revolving disk K, which distributes the ink. The disk K is caused to revolve in the usual manner by a ratchet-wheel, n, upon the underside of the disk, and the pawl p, pivoted to the arm 1".

The slotted arms D, as will be noticed, operate as levers to throw up the lower side or edge of the platen B and frame 0 to the position shown in Figs. 1 and 3 of the drawings, thus bringing it in a convenient an gle for feedmg.

The togglejoint connection between the platen-frame O and press-frame A is operated by means of the link f which ispivoted to one of the three rocking arms, having a common axis upon the shaft h. Thus it will be apparent that the vibration of the arm 9 will,through its link-connection above described, operate the toggle-joint. This arm g is given its vibratory motion by a hand-lever, E, which is connected to the arm '5 by link is.

The inking-rollers I are given their motion by the rod F, connected, to the roller-frame G and to the arm m, said rollers passing alter- In a printing-press, the platen B, in combinately over the inking-disk K and the face of nation with the sliding arms D, arm b, yokethe type. toggle c d, rocking shaft h, having arms g i m,

Although I have shown a hand-lever'for oplever Broiler-frame G, and connecting-links 5 erating the press, treadle or any other suitaf k F, substantially as and. for the purpose :5

ble power may be employed. specified.

Having now fully described the construction 13. A. HARLOW. and operation of my invention, What I claim Witnesses: as new, and desire to secure by Letters Pat-- CHAS. G. MORTIMER, 1o ent, is- MINUS H. MURRAY. 

